Is your truck or SUV suffering from frustrating electrical issues, a persistent check engine light, or a no-start condition? A failing Engine Control Module (ECM) is often the culprit, leaving your vehicle unreliable and sidelining you when you need it most. This pre-programmed ECM is the definitive solution, designed to restore your vehicle’s performance and get you back on the road with confidence. We take the guesswork and complexity out of the repair by flashing the module with the latest GM software specifically matched to your vehicle’s VIN. This means no expensive trips to the dealership for programming—it arrives ready for a straightforward installation.
Common Symptoms of a Failing ECM & Your Direct Solution
If you’re experiencing any of the following, a faulty ECM is the likely cause. This module is the solution for issues such as:
- Persistent Check Engine Light (CEL) with no clear cause
- Engine stalling, sputtering, or running rough
- Noticeable decrease in fuel economy
- Transmission shifting problems or harshness
- Complete no-start or intermittent starting issues
- Communication errors with diagnostic scan tools
- Error codes related to internal module failure (e.g., P0601, P0606)
By replacing your old unit with this professionally programmed 2009-2010 Silverado 3500 ECM 12625455, you are directly addressing the root cause of these debilitating problems and restoring your vehicle’s factory-spec operation.
Features & Benefits
- ✔ Plug-and-Play Installation: This module is professionally programmed to your vehicle’s specific VIN, eliminating the need for additional dealer programming. Simply install it and turn the key.
- ✔ Updated GM Software: We flash each unit with the newest stable software updates from GM, ensuring optimal engine performance, fuel efficiency, and emissions control.
- ✔ Guaranteed Compatibility: A direct replacement for part numbers 12625455 and 12629009, ensuring a perfect fit and function for a wide range of GM trucks, vans, and SUVs.
- ✔ Restore Peak Performance: Eliminate rough idle, poor acceleration, and other performance issues by installing a correctly functioning engine computer.
- ✔ Cost-Effective Solution: Avoid the high costs and scheduling hassles of a dealership service department with a solution that’s ready to install right out of the box.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight from a 20-Year Technician: I’ve seen countless hours and dollars wasted chasing sensor codes when the real problem was a failing ECM. A classic sign is when you replace a sensor (like an O2 or MAP sensor) based on a code, only for the code to return immediately. The ECM’s internal circuits that read these sensors can fail, creating false readings. Before you replace another part, consider the brain of the operation. This programmed 2009-2010 Silverado 3500 ECM 12625455 solves the problem at its source, saving you from a frustrating cycle of misdiagnosis.
Frequently Asked Questions
Do I need to do any programming myself?
No. This ECM comes completely pre-programmed to the VIN you provide. The service is included in the purchase price, making this a true plug-and-play solution.
What information do you need from me?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This allows us to flash the module with the exact software for your truck’s engine, transmission, and options.
Where can I find my VIN?
Your VIN can be found on a metal plate on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, and on your vehicle’s registration and insurance documents.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of your original ECM, this part is the correct solution. It will resolve codes related to the module itself (like P0600-P0606) and codes caused by faulty sensor drivers within the computer.
What if my original part number is 12629009?
This module is a fully compatible, direct replacement for both part numbers 12625455 and 12629009. You can order with confidence knowing it will work for your application.